PrimaryKey    *Field
	PrimaryValue  string
	ForeignKey    *Field
	OwnPrimaryKey bool
}

func (schema *Schema) parseRelation(field *Field) *Relationship {
	var (
		err        error
		fieldValue = reflect.New(field.IndirectFieldType).Interface()
		relation   = &Relationship{
			Name:        field.Name,
			Field:       field,
			Schema:      schema,
			foreignKeys: toColumns(field.TagSettings["FOREIGNKEY"]),

    /** The key of the configuration. e.g. url */
    String INDEX_FIELD_URL = "index.field.url";

    /** The key of the configuration. e.g. doc_id */
    String INDEX_FIELD_doc_id = "index.field.doc_id";

    /** The key of the configuration. e.g. _id */
    String INDEX_FIELD_ID = "index.field.id";

    /** The key of the configuration. e.g. _version */

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        return searchEngineClient.getDocument(fessConfig.getIndexDocumentUpdateIndex(), builder -> {
            builder.setQuery(QueryBuilders.idsQuery().addIds(id));
            builder.setFetchSource(fields, null);
            return true;
        }).orElse(null);
    }

### Type Annotations and Tooling

First let's see how editors, mypy and other tools would see this.

`BaseUser` has the base fields. Then `UserIn` inherits from `BaseUser` and adds the `password` field, so, it will include all the fields from both models.

We annotate the function return type as `BaseUser`, but we are actually returning a `UserIn` instance.

    Field[] fields = type.getDeclaredFields();
    Arrays.sort(fields, BY_FIELD_NAME);
    for (Field field : fields) {
      if (Modifier.isPublic(field.getModifiers())
          && Modifier.isStatic(field.getModifiers())
          && Modifier.isFinal(field.getModifiers())) {
        if (field.getGenericType() == field.getType() && type.isAssignableFrom(field.getType())) {

  repeated ResourceClaimTemplate items = 2;
}

// ResourceClaimTemplateSpec contains the metadata and fields for a ResourceClaim.
message ResourceClaimTemplateSpec {
  // ObjectMeta may contain labels and annotations that will be copied into the PVC
  // when creating it. No other fields are allowed and will be rejected during
  // validation.
  // +optional

            ASN1EncodableVector fields = new ASN1EncodableVector();
            int res = getResult();
            if ( res != UNSPECIFIED_RESULT ) {
                fields.add(new DERTaggedObject(true, 0, new ASN1Enumerated(res)));
            }
            ASN1ObjectIdentifier mech = getMechanism();
            if ( mech != null ) {
                fields.add(new DERTaggedObject(true, 1, mech));
            }

Например, вы можете использовать это для добавления дополнительной информации для пользовательского интерфейса в вашем веб-приложении и т.д.

///

## Дополнительные аргументы поля `Field`

При использовании `Field()` с моделями Pydantic, вы также можете объявлять дополнительную информацию для **JSON Schema**, передавая любые другие произвольные аргументы в функцию.

    Field[] fields = type.getDeclaredFields();
    Arrays.sort(fields, BY_FIELD_NAME);
    for (Field field : fields) {
      if (Modifier.isPublic(field.getModifiers())
          && Modifier.isStatic(field.getModifiers())
          && Modifier.isFinal(field.getModifiers())) {
        if (field.getGenericType() == field.getType() && type.isAssignableFrom(field.getType())) {

				tx.AddError(rel.Field.Set(tx.Statement.Context, reflectValue.Index(i), reflect.MakeSlice(rel.Field.IndirectFieldType, 0, 10).Interface()))
			default:
				tx.AddError(rel.Field.Set(tx.Statement.Context, reflectValue.Index(i), reflect.New(rel.Field.FieldType).Interface()))
			}
		}
	}

	for i := 0; i < reflectResults.Len(); i++ {
		elem := reflectResults.Index(i)
		for idx, field := range relForeignFields {